First shot at value backend
Backend changes for __builtin_*
Changes to the code gen wrappers
Update ops/expr* code gen interfaces
Continuing expr_* changes for backend
More expression changes for backend
Partial changes to statements
Change of interface for basic block creation
More middle end changes for new backend
switch, case and default code gen
While and continue backend code
Block, string and compound assignment backends
Backend value release/retain semantics
Moving around backend code and changing parameters
Beginning to link up to backend impl + splitting out.c
v_to_reg*() changes
Rename out_*.c -> *.c
Reshuffle of code around the backend - finish out.c split
if-0'd x86 backend + adding back in
More x86_64 backend functions